CN208010446U - A kind of positive displacement silencer and exhaust silencer system - Google Patents

A kind of positive displacement silencer and exhaust silencer system Download PDF

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Publication number
CN208010446U
CN208010446U CN201820046055.XU CN201820046055U CN208010446U CN 208010446 U CN208010446 U CN 208010446U CN 201820046055 U CN201820046055 U CN 201820046055U CN 208010446 U CN208010446 U CN 208010446U
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China
Prior art keywords
exhaust
silencer
air inlet
pipe
positive displacement
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CN201820046055.XU
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Chinese (zh)
Inventor
李琨
周达云
杨鑫
蒲保全
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Lifan Technology Group Co Ltd
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Lifan Industry Group Co Ltd
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Abstract

The utility model discloses a kind of positive displacement silencers, including shell, shell both ends be respectively provided with connection air inlet pipe, exhaust pipe air inlet end cap and exhaust end cover, the shell interior sealing is connected with first partition, second partition, first partition and the spaced setting of second partition, to which enclosure interior is separated into high temperature chamber, heat exchanging chamber and low temperature cavity successively from air inlet end cap to exhaust end cover direction;Several heat exchanger tubes are equipped in the heat exchanging chamber, heat exchanger tube both ends are connected to high temperature chamber, low temperature cavity respectively;Corresponding heat exchange cavity region is respectively equipped with the water inlet pipe and outlet pipe being connected to heat exchanging chamber on the shell.Also disclose a kind of exhaust silencer system using positive displacement silencer.This practicality solves technical problem conflicting between silencer noise reduction and exhaust system cooling, cooling can be realized while noise reduction, heat exchange efficiency is high, can reduce the volume of silencer.

Description

A kind of positive displacement silencer and exhaust silencer system
Technical field
The utility model is related to a kind of silencer for automobile exhaust system and use the exhaust system of silencer.
Background technology
During automobile engine to exhaust, gas quickly goes out exhaust outlet and will produce huge noise, it is therefore desirable to It installs silencer in exhaust system additional and carries out noise reduction.The main reason quieter material of silencer in the prior art inhales sound wave It receives.Sound-absorbing material is generally foamed plastics, and pole not environmentally, and occupies that space is big, and the volume size of silencer is forced to increase, from And the installation space of exhaust system demand is caused to increase(Exhaust system self-temperature is higher, itself requires and peripheral component Distance is big,)Extremely it is unfavorable for the arrangement of exhaust system peripheral component.In addition, using silencer made of sound-absorbing material for resistance Property silencer, when air-flow passes through dissipative muffler, sound wave just causes the shake of air and fiber fines in sound-absorbing material hole It is dynamic, since friction and viscosity resistance, acoustic energy become thermal energy and absorb, exhaust system temperature is caused further to increase.But it is Automobile interiors layout it is compact, it is desirable that reduce the temperature of exhaust system, current silencer cannot then meet this need It asks.
Utility model content
In view of the above shortcomings of the prior art, the utility model provides a kind of positive displacement silencer, solves in the prior art Silencer noise reduction and exhaust system cooling between conflicting technical problem, cooling can be realized while noise reduction, is changed The thermal efficiency is high.
In order to solve the above-mentioned technical problem, the utility model uses the following technical solution:A kind of positive displacement silencer, Including shell, shell both ends be respectively provided with connection air inlet pipe, exhaust pipe air inlet end cap and exhaust end cover, in the shell Be sealedly connected with first partition, second partition, first partition and the spaced setting of second partition, to by enclosure interior from into Gas end cap is separated into high temperature chamber, heat exchanging chamber and low temperature cavity successively to exhaust end cover direction;Several heat exchange are equipped in the heat exchanging chamber Pipe, heat exchanger tube both ends are connected to high temperature chamber, low temperature cavity respectively;Corresponding heat exchange cavity region is respectively equipped with and heat exchanging chamber on the shell The water inlet pipe and outlet pipe of connection.
Preferably, the high temperature intracavitary be equipped with air inlet separator tube, air inlet separator tube one end connect with air inlet end cap and with into Air admission hole connection on gas end cap, the other end are connect with first partition;Several through-holes are provided on the tube wall of air inlet separator tube so that In gas diffusion to high temperature chamber in air inlet separator tube.
Preferably, be equipped with exhaust separator tube in the low temperature cavity, exhaust separator tube one end connect with exhaust end cover and with row Gas vent connection on gas end cap, the other end are connect with second partition;It is vented on the tube wall of separator tube and is provided with several through-holes so that Gas in low temperature cavity can enter in exhaust separator tube.
Preferably, the shell is in a tubular form;The heat exchanger tube surrounds heat exchanging chamber axial line annular spread.
Preferably, in housing bottom, outlet pipe is arranged in case top for the water inlet pipe setting.
Preferably, the water inlet pipe is positioned close to the intersection of heat exchanging chamber and low temperature cavity;Outlet pipe setting by The intersection of nearly heat exchanging chamber and high temperature chamber.
The utility model also provides a kind of exhaust silencer system, including air inlet pipe, exhaust pipe and noise elimination assembly, air inlet pipe It is connected to by noise elimination assembly with exhaust pipe, above-mentioned positive displacement silencer is used in the noise elimination assembly.
Preferably, the noise elimination assembly includes former and later two silencers, and premuffler is the positive displacement silencer;Before disappear It is connected to by intermediate tube between sound device and rear muffler;Premuffler is connected to air inlet pipe, and rear muffler is connected to exhaust pipe.
Compared with prior art, the utility model has the advantages that:
1, the gas of high temperature chamber enters back into low temperature cavity after being shunted by heat exchanger tube, realizes shunting noise reduction, and And high temperature chamber can keep in gas with low temperature cavity, to play the cushioning effect to gas, improve noise reduction.High temperature chamber with Air inlet separator tube, exhaust separator tube are respectively set in low temperature cavity, the noise elimination effect of silencer can be further increased.
2, since first partition, second partition are hermetically connected with the shell so that coolant liquid can be full of cooling chamber, formed and held Product formula silencer, heat exchanger tube come into full contact in cooling chamber with coolant liquid, and heat exchange efficiency is high, good effect of heat exchange.
3, high-temperature gas enters the heat exchanger tube of cooling chamber, and coolant liquid is passed through into cooling chamber, and coolant liquid passes through heat exchanger tube The heat of high-temperature gas is absorbed, so that the gas temperature into low temperature cavity reduces, the flow velocity of cryogenic gas is less than High Temperature Gas The flow velocity of body, Mach number of the cryogenic gas in the pipeline of exhaust system reduce, and allow for the hydrodynamic noise of exhaust system and reduce, And at the same time reducing radiations heat energy of the exhaust system to Surrounding Parts, so that it may with reduce exhaust system and Surrounding Parts it Between distance reduce, it is more flexible in arrangement, keep arrangement more flexible.
4, after due to coolant liquid heat absorption heating, density declines, and can float, and water inlet pipe is arranged in housing bottom, outlet pipe The coolant liquid after heat absorption can be discharged in time in case top, coolant liquid bottom in and top out for setting, keep higher temperature ladder Degree improves heat exchange efficiency.
5, water inlet pipe is positioned close to the intersection of heat exchanging chamber and low temperature cavity;The outlet pipe be positioned close to heat exchanging chamber with The intersection of high temperature chamber so that airflow direction flows to direction on the contrary, forming heat convection with coolant liquid, and heat exchange efficiency is high.
Description of the drawings
Fig. 1 is the structural schematic diagram of positive displacement silencer in present embodiment;
Fig. 2 is the structural schematic diagram of exhaust silencer system in present embodiment.
Specific implementation mode
The utility model is described in further detail with preferred embodiment below in conjunction with the accompanying drawings.
As shown in Figure 1, a kind of positive displacement silencer, including shell 1,1 both ends of shell be respectively provided with connection air inlet pipe, The air inlet end cap and exhaust end cover of exhaust pipe, 1 interior sealing of the shell are connected with first partition 11, second partition 12, first every Plate 11 and 12 spaced setting of second partition, to will successively separate from air inlet end cap to exhaust end cover direction inside shell 1 At high temperature chamber, heat exchanging chamber and low temperature cavity;Be equipped with several heat exchanger tubes 13 in the heat exchanging chamber, 13 both ends of heat exchanger tube respectively with high temperature Chamber, low temperature cavity connection;Corresponding heat exchange cavity region is respectively equipped with the water inlet pipe and outlet pipe being connected to heat exchanging chamber on the shell 1. Since first partition 11, second partition 12 and shell 1 are tightly connected so that coolant liquid can be full of cooling chamber, form positive displacement Silencer, heat exchanger tube 13 come into full contact in cooling chamber with coolant liquid, and heat exchange efficiency is high, good effect of heat exchange.
The gas of high temperature chamber enters back into low temperature cavity after being shunted by heat exchanger tube 13, realizes shunting noise reduction, and And high temperature chamber can keep in gas with low temperature cavity, to play the cushioning effect to gas, improve noise reduction.
In order to further increase noise elimination effect, in present embodiment, the high temperature intracavitary is equipped with air inlet separator tube 14, 14 one end of air inlet separator tube connect with air inlet end cap and is connected to the air admission hole that inlet end covers, and the other end connects with first partition 11 It connects;Several through-holes are provided on the tube wall of air inlet separator tube 14 so that in the gas diffusion to high temperature chamber in air inlet separator tube 14.Institute It states and is equipped with exhaust separator tube in low temperature cavity, exhaust separator tube one end connect with exhaust end cover and connects with the gas vent on exhaust end cover Logical, the other end is connect with second partition 12;It is vented on the tube wall of separator tube 15 and is provided with several through-holes so that the gas in low temperature cavity It can enter in exhaust separator tube 15.
In present embodiment, the shell 1 is in a tubular form;The heat exchanger tube 13 is around heat exchanging chamber axle center wire loop point Cloth, the distribution of heat exchanger tube 13 is more uniform, and heat transfer effect is more preferable.
In present embodiment, the setting of the water inlet pipe 17 is in 1 bottom of shell, and the setting of outlet pipe 16 is at 1 top of shell; The water inlet pipe 17 is positioned close to the intersection of heat exchanging chamber and low temperature cavity;The outlet pipe 16 is positioned close to heat exchanging chamber and height The intersection of warm chamber.
After coolant liquid heat absorption heating, density declines, and can float, and water inlet pipe 17 is arranged in 1 bottom of shell, outlet pipe Coolant liquid after heat absorption can be discharged in 1 top of shell, coolant liquid bottom in and top out, keep higher temperature by 16 settings in time Gradient improves heat exchange efficiency.Water inlet pipe 17 is positioned close to the intersection of heat exchanging chamber and low temperature cavity;The setting of the outlet pipe 16 exists Close to the intersection of heat exchanging chamber and high temperature chamber so that airflow direction flows to direction on the contrary, forming heat convection with coolant liquid, exchanges heat It is efficient.
As shown in Fig. 2, the exhaust silencer system of the positive displacement silencer using present embodiment, including air inlet pipe 1, Exhaust pipe and noise elimination assembly, air inlet pipe 1 are connected to exhaust pipe by noise elimination assembly, and above-mentioned volume is used in the noise elimination assembly Formula silencer;The noise elimination assembly includes premuffler 2 and rear muffler 4, and premuffler 2 is the positive displacement silencer;Before It is connected to by intermediate tube 3 between silencer 2 and rear muffler 4;Premuffler is connected to air inlet pipe 1, rear muffler 4 and exhaust pipe Connection.
High-temperature gas passes through exhaust pipe 1 successively, the high temperature chamber of premuffler 2 enters the heat exchanger tube of cooling chamber, to cooling Coolant liquid is passed through in chamber, coolant liquid absorbs the heat of high-temperature gas by heat exchanger tube, so that into the gas temperature of low temperature cavity Degree reduces, and the flow velocity of cryogenic gas is less than the flow velocity of high-temperature gas, Mach number drop of the cryogenic gas in the pipeline of exhaust system Low, allowing for the hydrodynamic noise of exhaust system reduces, and at the same time radiations heat energy of the exhaust system to Surrounding Parts is reduced, Keep arrangement more flexible.In addition, due to the reduction of flow velocity, under same backpressure requirements, can reduce in exhaust system The later pipe diameter of 2 exhaust end of premuffler to increase divergence ratio, or reduce simultaneously caliber and rear muffler 4 it is transversal Area reduces cost and weight.
Finally illustrate, the above examples are only used to illustrate the technical scheme of the present invention and are not limiting, although with reference to compared with Good embodiment describes the invention in detail, it will be understood by those of ordinary skill in the art that, it can be to the technology of invention Scheme is modified or replaced equivalently, and without departing from the objective and range of technical solution of the present invention, should all be covered in this hair In bright right.

Claims (8)

1. a kind of positive displacement silencer, including shell, shell both ends be respectively provided with connection air inlet pipe, exhaust pipe inlet end Lid and exhaust end cover, it is characterised in that:The shell interior sealing is connected with first partition, second partition, first partition and second The spaced setting of partition board, to which enclosure interior to be separated into high temperature chamber, heat exchange successively from air inlet end cap to exhaust end cover direction Chamber and low temperature cavity;Several heat exchanger tubes are equipped in the heat exchanging chamber, heat exchanger tube both ends are connected to high temperature chamber, low temperature cavity respectively;It is described Corresponding heat exchange cavity region is respectively equipped with the water inlet pipe and outlet pipe being connected to heat exchanging chamber on shell.
2. positive displacement silencer according to claim 1, it is characterised in that:The high temperature intracavitary is equipped with air inlet separator tube, Air inlet separator tube one end connect with air inlet end cap and is connected to the air admission hole that inlet end covers, and the other end is connect with first partition; Several through-holes are provided on the tube wall of air inlet separator tube so that in the gas diffusion to high temperature chamber in air inlet separator tube.
3. positive displacement silencer according to claim 1, it is characterised in that:Exhaust separator tube is equipped in the low temperature cavity, Exhaust separator tube one end connect with exhaust end cover and is connected to the gas vent on exhaust end cover, and the other end is connect with second partition; It is vented on the tube wall of separator tube and is provided with several through-holes so that the gas in low temperature cavity can enter in exhaust separator tube.
4. positive displacement silencer according to claim 1, it is characterised in that:The shell is in a tubular form;The heat exchanger tube encloses Around heat exchanging chamber axial line annular spread.
5. positive displacement silencer according to claim 1, it is characterised in that:The water inlet pipe is arranged in housing bottom, goes out Water pipe is arranged in case top.
6. positive displacement silencer according to claim 1, it is characterised in that:The water inlet pipe be positioned close to heat exchanging chamber with The intersection of low temperature cavity;The outlet pipe is positioned close to the intersection of heat exchanging chamber and high temperature chamber.
7. a kind of exhaust silencer system, including air inlet pipe, exhaust pipe and noise elimination assembly, air inlet pipe is total by eliminating the noise with exhaust pipe At connection, it is characterised in that:Any positive displacement silencer in claim 1 to 6 described in the noise elimination assembly.
8. exhaust silencer system according to claim 7, it is characterised in that:The noise elimination assembly includes former and later two noise eliminations Device, premuffler are the positive displacement silencer;It is connected to by intermediate tube between premuffler and rear muffler;Premuffler with Air inlet pipe is connected to, and rear muffler is connected to exhaust pipe.
CN201820046055.XU 2018-01-11 2018-01-11 A kind of positive displacement silencer and exhaust silencer system Active CN208010446U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201820046055.XU CN208010446U (en) 2018-01-11 2018-01-11 A kind of positive displacement silencer and exhaust silencer system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201820046055.XU CN208010446U (en) 2018-01-11 2018-01-11 A kind of positive displacement silencer and exhaust silencer system

Publications (1)

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CN208010446U true CN208010446U (en) 2018-10-26

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109538330A (en) * 2018-12-06 2019-03-29 力帆实业(集团)股份有限公司 A kind of silencer and exhaust silencer system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109538330A (en) * 2018-12-06 2019-03-29 力帆实业(集团)股份有限公司 A kind of silencer and exhaust silencer system

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